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DK197484A - METHOD OF PREPARING SUBSTITUTED 2,3-DIHYDROBENZOFURAN - Google Patents

METHOD OF PREPARING SUBSTITUTED 2,3-DIHYDROBENZOFURAN Download PDF

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Publication number
DK197484A
DK197484A DK197484A DK197484A DK197484A DK 197484 A DK197484 A DK 197484A DK 197484 A DK197484 A DK 197484A DK 197484 A DK197484 A DK 197484A DK 197484 A DK197484 A DK 197484A
Authority
DK
Denmark
Prior art keywords
dihydrobenzofuran
preparing substituted
formula
aryl
branched alkyl
Prior art date
Application number
DK197484A
Other languages
Danish (da)
Other versions
DK197484D0 (en
Inventor
Carlo Neri
Villiam Giroldini
Antonio Rinaldi
Mario Traversoni
Mario Clerici
Original Assignee
Enichimica Secondaria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from IT20740/83A external-priority patent/IT1161226B/en
Priority claimed from IT20737/83A external-priority patent/IT1161223B/en
Application filed by Enichimica Secondaria filed Critical Enichimica Secondaria
Publication of DK197484D0 publication Critical patent/DK197484D0/en
Publication of DK197484A publication Critical patent/DK197484A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
    • C07D307/79—Benzo [b] furans; Hydrogenated benzo [b] furans with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
    • C07C37/20—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
    • C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
    • C07C39/15—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with all hydroxy groups on non-condensed rings, e.g. phenylphenol
    • C07C39/16—Bis-(hydroxyphenyl) alkanes; Tris-(hydroxyphenyl)alkanes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
    • C07D307/86—Benzo [b] furans; Hydrogenated benzo [b] furans with an oxygen atom directly attached in position 7

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Furan Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Plural Heterocyclic Compounds (AREA)

Description

""CXtØ"·"" CXtØ "·

OH I OH CH i nærværelse af katalytiske mængder af mindst en uorganiskeller organisk sur forbindelse ved en høj temperatur, idet produkterne fra omlejringen fjernes fra reaktionsblandingen efterhånden som de dannes. 1,l-bis(2-hydroxybenzen)alkyl- og/eller -arylethan opnås ud fra substituerede phenoler og aldehyder under indflydelse af specielle katalysatorer.OH I OH CH in the presence of catalytic amounts of at least one inorganic or organic acid compound at a high temperature, removing the products of the rearrangement from the reaction mixture as they are formed. 1,1-bis (2-hydroxybenzene) alkyl- and / or -arylethane is obtained from substituted phenols and aldehydes under the influence of special catalysts.

Endvidere omfattes 1,l-bis(2,3-dihydroxybenzen}alky1-eller -aryl-methan med formlen: F?2 R2Also included is 1,1-bis (2,3-dihydroxybenzene) alkyl or aryl methane of the formula:

0H0H

OH I OHOH I OH

R hvori R betegner ligekædet eller forgrenet alkyl eller aryl;R is wherein R is straight or branched alkyl or aryl;

Rj, R2 og R3 er ens eller forskellige og betegner H, halogen, ligekædet eller forgrenet alkyl, aryl, alkaryl, -OH, -OR4, -N(R4)2* hvori R4 betegner ligekædet eller forgrenet alkyl. Sådanne forbindelser opnås ved omsætning af en diphenol med formlen:R 1, R 2 and R 3 are the same or different and denote H, halogen, straight or branched alkyl, aryl, alkaryl, -OH, -OR 4, -N (R 4) 2 * wherein R 4 represents straight or branched alkyl. Such compounds are obtained by reacting a diphenol of the formula:

RiRi

r2-^ ^-OH R3 OH med et aldehyd med formlen:R 2 OH-R 3 OH with an aldehyde of the formula:

R - CHO i nærværelse af katalytiske mængder af mindst én forbindelse valgt fra gruppen omfattende oxider, hydroxider, alkoholater og carboxylater af metaller, der tilhører grupperne ΙΑ, IIA, I IB og VIIB i det periodiske system, med eller uden tilstedeværelse af et væskeformigt og indifferent (dvs. ikke-reagerende) organisk opløsningsmiddel, idet vandet, der dannes som biprodukt ved reaktionen, eventuelt fjernes efterhånden som det dannes.R - CHO in the presence of catalytic amounts of at least one compound selected from the group comprising oxides, hydroxides, alcoholates and carboxylates of metals belonging to groups ΙΑ, IIA, IB and VIIB of the periodic table, with or without the presence of a liquid and inert (i.e., non-reactive) organic solvent, the water formed as a by-product of the reaction being optionally removed as it is formed.

DK197484A 1983-04-22 1984-04-17 METHOD OF PREPARING SUBSTITUTED 2,3-DIHYDROBENZOFURAN DK197484A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20740/83A IT1161226B (en) 1983-04-22 1983-04-22 1,1-BIS (2.3-DIIDROSSIBENZEN) ALCHIL - O - ARIL - METHANE AND PROCEDURE FOR THEIR PREPARATION
IT20737/83A IT1161223B (en) 1983-04-22 1983-04-22 PROCEDURE FOR THE PREPARATION OF SUBSTITUTED 2,3-DIHYDROBENZOFURAN COMPOUNDS

Publications (2)

Publication Number Publication Date
DK197484D0 DK197484D0 (en) 1984-04-17
DK197484A true DK197484A (en) 1984-10-23

Family

ID=26327640

Family Applications (1)

Application Number Title Priority Date Filing Date
DK197484A DK197484A (en) 1983-04-22 1984-04-17 METHOD OF PREPARING SUBSTITUTED 2,3-DIHYDROBENZOFURAN

Country Status (9)

Country Link
US (1) US4564691A (en)
EP (1) EP0127208A1 (en)
AU (1) AU2705884A (en)
CA (2) CA1223605C (en)
DK (1) DK197484A (en)
ES (1) ES8603452A1 (en)
IL (1) IL71560A0 (en)
NO (1) NO841530L (en)
SU (1) SU1375134A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123357A3 (en) * 1983-04-22 1985-07-31 ENICHIMICA SECONDARIA S.p.A. Process for the preparation of 2,3-bihydro-2,2-dimethyl-7-benzofuranol
US4794160A (en) * 1985-11-25 1988-12-27 General Electric Company Crosslinkable polycyclic polycarbonate oligomers and method for their preparation
US4972039A (en) * 1985-11-25 1990-11-20 General Electric Company Process of crosslinking polycyclic oligomer from tetraphenal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929837A (en) * 1971-11-08 1975-12-30 Ici Australia Ltd 2,3-Dihydro-2,2-dimethyl-7-isopropyl benzofuran and 2-(2,3-dihydro-2,2-dimethyl-7-benzofuranyl)isopropyl hydroperoxide
CH619917A5 (en) * 1975-12-17 1980-10-31 Nii R I Latexnykh Izdely Process for the preparation of 2,2'-methylene- or 2,2'-ethylidinebis(4,6-dialkylphenols) or of 2,2'-methylenebis(4-methyl-6-cyclohexylphenol).
FR2470768A1 (en) * 1979-12-07 1981-06-12 Rhone Poulenc Agrochimie PROCESS FOR THE PREPARATION OF BENZOFURAN DERIVATIVES
ZA825015B (en) * 1981-07-31 1983-04-27 Union Carbide Corp Process for the preparation of carbofuran

Also Published As

Publication number Publication date
CA1223605C (en) 1987-06-30
ES532166A0 (en) 1985-12-16
SU1375134A3 (en) 1988-02-15
US4564691A (en) 1986-01-14
ES8603452A1 (en) 1985-12-16
AU2705884A (en) 1984-10-25
CA1223605A (en) 1987-06-30
NO841530L (en) 1984-10-23
EP0127208A1 (en) 1984-12-05
DK197484D0 (en) 1984-04-17
IL71560A0 (en) 1984-07-31

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